Why EM_FINDTEXTEX message is always returning a zero(win32)?

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I want to search for words in a rich edit control and i used the EM_FINDTEXTW message for the purpose. but it is always returning zero even if the particular word is there in the edit box.. Why is it so?

C++

// i have created the edit control using the below code 
LoadLibrary("Msftedit.dll");
	HWND hEdit2 = CreateWindowEx(WS_EX_CLIENTEDGE,
		"RICHEDIT50W",
		"My Rich Edit",
		WS_VISIBLE | WS_BORDER |
		WS_CHILD |
		ES_MULTILINE | WS_EX_RIGHTSCROLLBAR | WS_VSCROLL | WS_SIZEBOX,
		500, 30,
		500, 500,
		hMAin,
		0,
		GetModuleHandle(NULL),
		NULL);
SetWindowText(hEdit2, buffer);


//searching for a particular word
FINDTEXTEX ft;
	CHARRANGE ch;
	ch.cpMin = 0;
	ch.cpMax = -1;
	ft.chrg = ch;
	ft.lpstrText = m_szWord;
	int nIndex = SendMessage(hEdit2 , EM_FINDTEXTEX, FR_WHOLEWORD, (LPARAM)&ft);
	CString s;
	s.Format("%d", nIndex);
	MessageBox(hMAin, s, "", NULL);

m_szWord contains the word i want to search in the edit box. MessageBox always shows the value zero.
Please Help..

Posted 12-Jan-15 22:50pm

Nimsha KV

Updated 12-Jan-15 22:58pm

CHill60

v6

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Kornfeld Eliyahu Peter 13-Jan-15 5:13am

From MSDN:
<pre>
Return value

If the target string is found, the return value is the zero-based position of the first character of the match.
If the target is not found, the return value is –1.
</pre>
So 0 means that the text found at the first position (index 0) and not means error!

Nimsha KV 13-Jan-15 5:47am

But the word is not at the beginning.. I tried giving different words..but still it is returning 0.

Jochen Arndt 13-Jan-15 5:23am

EM_FINDTEXTW requires using the Unicode structure and passing a Unicode string. But your code snippet is not Unicode.

All EM_FINDTEXTxxx messages return -1 when the content is not found. Zero indicates that the word has been found at the begin of the text.

Nimsha KV 13-Jan-15 5:47am

But the word is not at the beginning.. I tried giving different words..but still it is returning 0.

Jochen Arndt 13-Jan-15 5:55am

Just to be sure:
Your application is not a Unicode build and m_szWord is not Unicode?

Also:
What are the values of ft.chrgText upon return?

Nimsha KV 13-Jan-15 6:05am

character set is not set. Buffer is a small paragraph that is written to the edit box using SetWindowText(hEdit2, buffer) function. And m_szWord is what i enter to other edit box and get it using GetWindowText function. It is of type LPSTR. I want to search m_szWord in the first edit box(hEdit2).

Nimsha KV 13-Jan-15 6:11am

cpMin and cpMax of ft.chrgText is having garbage value upon return

Jochen Arndt 13-Jan-15 6:27am

Than the behaviour is not as documented in the MSDN.

When m_szWord is of type LPSTR, where it is pointing to?
The buffer must be valid when sending the message.

I have no more ideas if this is not the error source.

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_Asif_ · Accepted Answer · 2015-01-13T02:29:00

I tested below code and its working. Compare what is wrong at your end

LoadLibrary(L"Msftedit.dll");

hEdit2 = CreateWindowEx(WS_EX_CLIENTEDGE,
   L"RICHEDIT50W",
   L"My Rich Edit",
   WS_VISIBLE | WS_BORDER |
   WS_CHILD |
   ES_MULTILINE | WS_EX_RIGHTSCROLLBAR | WS_VSCROLL | WS_SIZEBOX,
   500, 30,
   500, 500,
   hWnd,
   0,
   GetModuleHandle(NULL),
   NULL);
   SetWindowText(hEdit2, L"This is Hello World");

   FINDTEXTEX ft;

   CHARRANGE ch;
   ch.cpMin = 0;
   ch.cpMax = -1;
   ft.chrg = ch;
   ft.lpstrText = L"Hello";
   nIndex = SendMessage(hEdit2 , EM_FINDTEXTEX, FR_DOWN, (LPARAM)&ft);